<!-- report component -->
<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home'}">首页</el-breadcrumb-item>
      <el-breadcrumb-item>数据统计</el-breadcrumb-item>
      <el-breadcrumb-item>数据报表</el-breadcrumb-item>
    </el-breadcrumb>
    <el-card>
      <!-- 为 eCharts 准备一个具备大小（宽高）的 DOM -->
      <div id="report" style="width: 600px;height:400px;"></div>
    </el-card>
  </div>
</template>

<script>
import echarts from 'echarts'
import _ from 'lodash'
export default {
  data() {
    return {
      // 指定图表的通用配置项
      option: {
        title: {
          text: '用户来源'
        },
        tooltip: {
          trigger: 'axis',
          axisPointer: {
            type: 'cross',
            label: {
              backgroundColor: '#E9EEF3'
            }
          }
        },
        grid: {
          left: '3%',
          right: '4%',
          bottom: '3%',
          containLabel: true
        },
        xAxis: [
          {
            boundaryGap: false
          }
        ],
        yAxis: [
          {
            type: 'value'
          }
        ]
      }
    }
  },

  created() {},
  mounted() {
    this.showReport()
  },
  methods: {
    // 渲染数据报表
    showReport() {
      // 基于准备好的dom，初始化echarts实例
      const myChart = echarts.init(document.getElementById('report'))

      // 获取统计数据
      this.axios.get('reports/type/1').then(resp => {
        if (resp.meta.status !== 200) {
          this.$message.error('获取统计数据失败')
        }
        // 合并图表的配置项和数据
        const reportOption = _.merge(this.option, resp.data)
        console.log(reportOption)
        // 使用刚指定的配置项和数据显示图表。
        myChart.setOption(reportOption)
      })
    }
  },

  components: {}
}
</script>

<style lang='scss' scoped>
</style>
